Wrong optimal solution with Glpk-4.34Hello, I have solved a MIP with 3 different solvers. Each solver gives an optimal solution after a few seconds. I want to minimize the objective function value.
The optimal solution (objective function value) given by Glpk is greater than the optimal solution (objective function value) of the 2 other solvers (cplex 12.2 and Gurobi 3.0.1) which have both the same objective function value. Does anybody know the reason of this difference ? You will find in attachment the model (problem.mod) and the data (problem.dat) of the problem and the LP file generated by Glpk from the *.mod and *.dat files (problem.lp) which has been solved by the 3 different solvers. Thank you for your help. Best regards. Marc UldryTitle: Wrong optimal solution with Glpk-4.34 Hello,
I have solved a MIP with 3 different solvers. Each solver gives an optimal solution after a few seconds.
I want to minimize the objective function value.
The optimal solution (objective function value) given by Glpk is greater than the optimal solution (objective function value) of the 2 other solvers (cplex 12.2 and Gurobi 3.0.1) which have both the same objective function value.
Does anybody know the reason of this difference ?
You will find in attachment the model (problem.mod) and the data (problem.dat) of the problem and the LP file generated by Glpk from the *.mod and *.dat files (problem.lp) which has been solved by the 3 different solvers.
Thank you for your help.
Best regards.
Marc Uldry
problem.dat
Description: Binary data
problem.lp
Description: Binary data
problem.mod
Description: Binary data
_______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
